| Date | Acquired | Amount |
|---|---|---|
| Jul 27, 2017 |
|
Undisclosed amount |
| Jan 05, 2017 |
|
Undisclosed amount |
| Oct 25, 2016 |
|
Undisclosed amount |
| Jun 28, 2016 |
|
Undisclosed amount |
| Jan 15, 2016 |
|
Undisclosed amount |
| Mar 28, 2012 |
|
Undisclosed amount |
| Feb 07, 2011 |
|
Undisclosed amount |
| Oct 14, 2009 |
|
Undisclosed amount |
| Oct 31, 2007 |
|
Undisclosed amount |
| Jul 19, 2006 |
|
Undisclosed amount |
